Item Price Qty
1 oz
Case (4 Gallons)

Industry Standard Catalyst

Methyl Ethyl Ketone Peroxide, or MEKP, is required with all polyester resins, gel coats and vinyl ester resin. It is required in different concentrations as defined for each resin product.

Each resin product is available as a kit with the correct amount of hardener. However, hardener may be purchased individually as shown here.


MEKP Hardener 1 oz. (#69-A) unit can be shipped via standard ground service without hazard charges within the 48 contiguous United States.

MEKP Hardener gallon (#69-D) and case (#69-E) units are considered hazardous (flammable) and will be subject to a hazard charge if shipped by standard ground.
MEKP 1 oz. (#69-A) unit will be subject to a hazard charge if shipped by air.
MEKP gallon (#69-A) and case (#69-E) units cannot be shipped by air.

Please see our Hazardous Shipping Chart for more information about hazard fees. We will consolidate items whenever possible to minimize these fees.
MEKP Hardener

MEKP is available in a variety of sizes that include:
One 1 ounce bottle (#69-A)
One gallon (#69-D)
One case of four gallons (#69-E)
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